NFC: Set and get DEP general bytes

Without an API for setting and getting the local and remote general bytes,
drivers won't be able to properly establish a DEP link.
This API also allows them to propagate the remote general bytes they get
from the DEP link establishment up to the LLCP layer.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index ea1caaeed13c..dccd96552f5d 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -1121,6 +1121,7 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
 {
         struct pn533_cmd_activate_param param;
         struct pn533_cmd_activate_response *resp;
+        u16 gt_len;
         int rc;
 
         nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
@@ -1146,7 +1147,11 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
         if (rc != PN533_CMD_RET_SUCCESS)
                 return -EIO;
 
-        return 0;
+        /* ATR_RES general bytes are located at offset 16 */
+        gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 16;
+        rc = nfc_set_remote_general_bytes(dev->nfc_dev, resp->gt, gt_len);
+
+        return rc;
 }
 
 static int pn533_activate_target(struct nfc_dev *nfc_dev, u32 target_idx,